Industrial truck



April 18, 1933. E. H. REMDE INDUSTRIAL TRUCK Filed AMarch 18, 1930 '7 Sheets-Sheet 1 INVENTQR wat;

ATTQRNEY V.. B Q

April 18, 1933. E. H. REMDE '13904,984

INDUSTRIAL TRUCK Filed March 18, 1930 7 Sheets-Sheet 2 mdd@ 47H. wm ATTORNEY April 18, 1933. E. H. REMDE NDUSTRIAL TRUCK 7 Sheets-Sheet 5 Filed March 18, 1930 INVENTOR 4 BY JAMA/Ld @../fz/

ATTORNEY April 18, 1933. E. H. REMDE INDUSTRIAL TRUCK Filed March 18, 1930 7 SheetsSheet 4 INVENTOR ATTORNEY R um April 18, 1933. E. H. REMDE INDUSTRIAL TRUCK Filed March 18, 1930 '7 Sheets-Sheet 5 KQ, ma

April 18, 193.3.v

EQ H. REMDE INDUSTRIAL TRUCK Filed March 18, 1950 7 Sheets-Sheet 6 ATTORNEY April 1s, 1933.l E, H, REMDE 1,904,984

INDUSTRIAL TRUCK Filed March 18, 1930 7 sheets-sheet 7 ATTORNEY nzovvann Yn. nnMni-i, 'or CLEVELAND, omo, Assienonwcro Patented Apr. 18, 1933 f commenti. orcnnvnmmnonro; A- CORPORATION or' oH'Io j y mnUs'rm'AL. TRUCK" appiication mea March 1s, i930. serial ivalisasss.

i A This invention relates to. an indlistrial truclr Another object of the invention is to pro? videl, in a truck ofthis type, a combined safety and slack take-up means arranged to stop Vthe motor when the elevatingmember reaches its limit of movement or slackoccurs in thehoistingmechanism. W i `Another. objectof the invention is lto provide, Ain a truck of this ftype, a combined safety and slack talreup means arranged to cut ofi current to the Vmgotorwhen the elevating member reaches its limit' 'of movement or slack occurs in the hoisting mechanism and to insure braking'of the motor to prevent overrun thereof. I Another object of theinventionis to provide, in a truckof thistype having a tilting guide frame, an improvedcableslack take-up nieanseapable of operating irrespective of the position of thefgnicle frame. Other objects of tlieinvention will be apparent to those skilled in the art to which my invention vrelates from thefollowing descrip? tion taken in connection with the accompany-v ing drawings, wherein i. e v y A Fig. 1 is aside elevation of ,a truck, partly in section on the line 1-1 oFig. 3 and parts broken away to facilitate the illustration,v embodying myinvention.` A 1 Fig. 2 is a front elevation of the truck, the elevating member 4being shown in elevated position and parts being broken away. Fig. 3 is a fragmentary section on the line 3 3 of Fig. l. Y y

Fig. 4 is a fragmentary section partly on the line and partly on 4the line tai-4a of Fia- I l i Fig. 5 is a fragmentary section, substantially on the line 5 5 of 4:; 'oneof the cable sheaves being shown in section.

Fig. 6 is a view partly in side elevation and partly in section substantially onthe'line 6 -6 of Fig. 3 showing'tlie-position of theparts when the elevating member is raised and the guide frame tiltedinwardly.` j

Fig. 7 is a view similar to`Fig.6, but showing the position 'of the parts when" the elevatev ing member meets an obstruction moving downwardly. f e 'Fig l8 is a detail section on tl'ieline ofFigs. 2 and 5. v f55 n Fig. 8a is a fragmentary view of, parts showninFigmS. H Y' Fg.` 9 is a diagram of `thev electric circa-its,

. Fig. l()` is a, fragmentary view of a truck partly on the line 10.`-1O of Fig.v ll, `embofdy 69 ing myinvention, but in which the combined Y safety andfcable slack takejup means are of a slightly differentl construction.

Fig. 11 is a fragmentary section on thellin 11-11 of Fig. 10. f 65 Fig. .12 is a section on thel'ine .of u;

jls. LV. i n. Ffg. lis a fragmllly SGCn on the line 13e-1 3 of Fig.V `1l.,` I Y F'g. 1,4 is a fragmentary in operated position.r .y y y ,.15 is a section. ontlie line `15j-l5 "of Fi .12.1 u 4 i i ,.ig. is is a. fragmentary viewfxpafts 1c. The sectionle comprises a pairof angles lbfconnected Aby an. angle ldta'front plate le and a cross platemlf. 2 indicates the electric batteries supported on the main i section lcnthese being preferably enclosed a sheet metal casing 3 having one or niore removable lsections or walls. 4: indicates a pair ofnprights` (onlyone being "shown in s Fig. l) securedto the frame 11 at its driving end and brac'edby glissets 4a. .The upper end of each upright llis preferably connectedto the outerportion ofthe-.lowframesec tion 1b orthe outer portion'.ot`th' adjacent side plate lo by a p'airof 4connectedbars V`,"f6

tol insure rigidity Vbetween the frame sections andthe uprights. Thezforward ends ofthe y. 'section similar` LZ0 y Fig.'13,'but Showing the slack take-upfmeans A if theuprights 4 carry/ brackets 7 and'these in turnpivotally supportV an operatives platform 8. 9 indicates a foot pedal associated withthe platform-8 and arranged to releasev a. brake .mechanism 10 whichA engages andA disengages. awheell or otherfelement driven by the" motor `11 through suitable/power.

Y, by a motor 1 1, the/latter being supplied with Y Y' `ourrentfrom the batteries 2. 12, 13,'indicatel pa-irs ofwheels1forsupporting-the frame 1, `the former being below vthe main frame` seetion lla' and driven in wellknown manner transmittingV mechanism.v The power-transmitting mechanism is enclosed infl a suitable v housing and the latter terminates in 1a cradle 1 4 tof which' the ymotor 11 yis rigidly connected, as shown in' Fig; 1f The cradle `v11hvr is supported by a torque member'l trunnioned atflfin the side plates. 1c'and v'connected'by a universaljoint` to the cradle 14,'"the1conf struction .andarrangement of torque.

member and its connections being 'substain -tially similar to like parts, shown in Letters' 1 Patent No. '1,628,145,11

Thewheels 12 Care meunted-Eonl knuckles in 'r .well known manner" for `steering purposes;

` likewise the wheels 13 'are knuckle 'mounted Y 'on'theopposite ends of'an'vaxlel?, as shown Vinfdotted lines in Fig. 3, the a'xle 17 ."beingl ksecured to thefangles 1b- .between the .angle ld 'and front plate 1e.V vBoth pairs of' wheels Vare connected by connections 1 8,for' simultaneous steering, andfthese connections lead of lthe" brackets 7,1 yand'operated through a lir'1lr19 byf a lever 20. 21- indicates a controller for controlling thefsipply fpurrent to the rmotor 11 to drive it vin one direction or theother.- The controller drum'is'gearedv tofafshaft21a which lisl eonnected b va linkage 22 5to' anfoperating vhandle 23.y The han-V Y dle '23" is detachably Connected to `the linkage so thatit may be ymoved vto anino'perative Y liosition.l vVlfhfen connected'tothe linkagej22,

and rthe Vcontroller v isfin neutrl al position, the

handlel23projects horizontally.`v

' 24'indicates ashaft vor-'pivot pin mounted on the low frame section ,l'b`r near its outer ena.: The side-plages imm'formedgwah 0 v'aligned Vopenings through which-the Vshaft extends, its free endsbeing supported in jour# outer sides of the-side plates 1c. l 26' indicates a pair of members swingably mounted at their lower lends on the shaft 24;

n v*hals 25 having flanges suitably secured to the 'For thispurposethe lowerendof each mem- ,er-127, secured on thefsha'fft bya cotter pin ber 26 is provided withY acasting terminating 1n ay knuckle 26aithrough1which Ythe shaft 24,(Xtend`sfslothatthe member 26may'swing about the shaft,'the knuckle being disposed between'theadjacent journal 25 and a wash,-

i the'fmeinbers 2 6fare-also provided with cast! fingsvterminating in knuckles'QvS, which piviated May, '10, 1927;

otallysupport the ends of a shaft 29, 'the lat- Y Y I ter being Vheld' against endwise movementby cotter pins 29a. 30 indicates a gui'deframei comprising a pair of V.spaced guides for an Velevating member 31 pivotally connected atV theirilupprends toV the shaft 29-jand deexample, kto the p'ositionshown vin. Fig.y 6.

TheV lowerv ends of the guides have sliding and pivotal engagement or connection withthe lowframe section 1b, such .connection being indicated as any entiretyv at 32,"so that when the 'guides aretilted'inwardly, 'apon Y v tion of 'the' weight ofthe 'guides and el'evatV f ing member'is carriedby the lowframesecsoV tion 1lb yinstead of by the members' 26.",1The

duly. 'The connection 32 is ,above the V'axle 17 fand theguides-30 extend' below the lat-v ter, so' that'the axle serves 'as a stop to limit the forward movementof the guides `'3 0 and "connection serves to prevent outward movement of the guides 30 shouldgthe upper ends of the members 26 swing forwardly vuil- .Y

members v26 at ytheir `upper'ends inthe event l of breakage of some Part or failure of the limit switch (to be later 'referred to)y to op# erate. 'The connection ,between the` guides 30 andY shaftl 29ma'y comprise KV brackets 33 fixed to 'the guides and extending inwardlyvv .A

atright angles thereto'- Vand bracedattheir inner endsby a cross'm'ember .Mandi-jour# e nals 34a carried onjthe' outer sides 'of vthese brackets, i the shaf t "f 29 extending l "through openings formed inthe brackets andirotatablyjfittng :the journals.

4 Thev shaftfae is f preferably?V reinforced Vintermediate fther 'Y brackets byl bridgefmembers y35' connected to 'the cross member 34 andfa crss member 36 connecting theV guides 30 together.v

^ Theelefatfngfmember 31 consists `the which textend "rodsfll, 48, 19. `l Sleeves 5 0,

ra surround eachvrodbetween the platesto *110. n following:Laflff-a, indicate pairs :of inner and 'outer plates, these plates beingY Vformed with aligned openings'- through space the'latte'rfand V'nuts51`onfthe ends of they rods serveto clamp'the plates and sleeves in` rigid relation, one relative to Vthe other.

Eachpair ofvplates L.l5- 450, 46-"-46d,is also connected in rigid relation by thefollowing parts :Q56 indicates v rods extending through aligned openings formed in the plates, each rod being surrounded bya sleeve or' bushing '1 Y 57 the inner'ends ofthe 4rodsare provided with heads which 'engageI thefplate 45 er 46,-

whereas'their outer 'endsQarej threadedy to" take nuts 58, which, when tightened yagainst `'the plate 45d or L16a secure theplates against n the ,endsof ,thefbushingb The bushing"57v onlo'ne rod as a shaft for a roller` 59- which rolls on one Ysu-rface or way of the adjacent guiderland the bushing 57 on the other rod 56serves as a shaft for a rolle-1' 60, which rolls 'onthe 5 opposite surface or Way of the adjacent guide 30, the rollers 59-60 between the pairs of plates 45-45a, 46-L1Ga, cofoperat` ing to movably support the elevating `menibei'` on the guides. The load engaging `device of the elevating member preferably comprises a plurality of L-shaped members 61 (preferably two-members), the upright portionsf'laof whichA are providedwith means to removably and adjustably engage a rod'63 having q'support ati-ts oppositeends in thel plates 45a, 46a, as shown in Fig. 3; or these upright portions may be formed with openings 62 through which the rod 63 extends. The rod 68 is held against endwise movement by cotter pins 64. The portions 61a of the L-shaped members 61 are independently slidfable onl the bar 63 to permit their adjustment one relative to the other according to the size of the load tobe engaged and moved. i

Of the connection 32,65 indicates a plate secured to the inner side of each guide 30 and extending inwardly. therefrom. The eX- tended portion'of the plate'isformed with an elongated opening 66 through which vextends a shaft 67. The plates 65 are disposed on the outer sides of the side plates 10. The plates 1c' are formed with aligned openings 68 to receive the shaft 67 and supportitrelatively stationary. The walls of the openings may be reinforced by plates 68a. v69 indicates` rollers loosely mounted on the outer or free ends of the shaft 67 and .arranged to be engaged by the inner surfaces or Ways of the j guides 30. As shown yin Fig. 1, 'when the guides are in normal or vertical position,

v their lower portions engage the rollers `69 so that the latter or the shaft? on which they are-v mounted form an abutment for the guides; but `when the supporting members 26 are swung inwardly,'they Vbodily raise and also swing the guides the same direction; 4accordingly the guides move around the axis of the shaft 67 and also roll on the rollers 69. It might be noted that the'major axesV `of the openings l66 are parallel to the guides 30 and spaced therefrom a distance equal to the radius of the rollers 69; hence in the movement of the guides to the position sho-wn in Figs. 6 and 7 and back to the position sho-wn in Fig. l, the shaft 67 will traverse the openings 66. Through the engagement ofthe walls of the openings 66- with the shaft 67, the guides 30 are interlocked with the Vlow frame section 1b and as a result vdangerof the lower ends of the guides swinging away from its abutment or relative 'to the low frame iseliminated. It will-also be noted A that the plates overlap the outer ends of 55 the side plates 1c and are Varranged in close controlled by`a controllerv7 1m.

relation thereto, the purpose vbeing Vto pre vent lateral swinging of theI guides.` construction permits the guidesto be supported and tilted in arrelative'lyfsinip-le'mannerat f the same time it insures rigidity. and 'steadi- .70 ness-'of the guides when ineithernormal o r tilted position. As a result the truck `may be drivenover uneven surfaces .without danger v of tipping Vthe load. f v70 indicates as an entiretythe means `for raising and lowering the elevating member 31 on the'gui'des 30., Of these,means,:71` in;` dicates a motor which is suppli'edwithcur# rent from the batteries 2; the `current being The Vmotor 71 is supported on ai housing 72. The housingis supported atits oppositezsides'by plates Y 74 secured theretoand to theside plates'lc, ras show-n in-F'igs. 1 and 3. Within the housing 72' are mounted suitable `drums 7 4i" on. which cables 7 5,17 5a, wind or unwind simultaneously according to the direction of rotation of the shaft of the motor 71., The shaft'of the Y motor is automatically held against rotation or freed by'a magnetically operatedl brake, enclosed in the casing 7 2a, one winding 72a 'off the electro-magnet being connected in series with the motor and arranged to Vvrelease the motor shaft when the ncircuit to the motor is closed. Ano-ther winding 7a forthe mag` net-ic brake is also connected in the circuit parallel to the motor through a shunt 76 having'a switch 7 7 e, as shown diagrammatically in Fig. A9, Athe purpose of which; will late-r appear. AThe drums 711 are connected. to a 10 shaft mounted within the casing 72 andl this shaft is driven through suitable reduction `gearing by the shaft of the motor 71. Ifl desired, suitable reduction `gearing -may be in'- i terposed betweenthe driven shaft and each 105 The `construction ofthe driving mechanism for `the drums, motor, motor mounting and magnetic brake for its shaft (except for the shunt .above'. referred tof) are substantially no 75, ct, extend to and around sheaves 77, 77a, i120 loosely mounted on the sha-ft 29, and from the latter sheaves the cables extend downwardly and are connected to the equalizer 78h; any desired manner. A The sheaves Y 77, 77a, are spaced from eachother on the shaft 29 and kin 125 close relationto the plates or bridges V35 by one or more sleeves'or collars,one thereof being the hub of a rocker 79,;to Which-reference will later be` made. By mounting-the sheaves V76-76a, 77-77a, in the,manner'v set -130 i forthftheelevating member maybe raisedor;

- lowered' with the guideslin normal position or in tilted position.V

f The equalizer comprises a rocker T0:

i tatably mounted-on vashaft 78a@ supported i ina-boss 78?) carriedby a bracketSc', the

boss andbracket'being'preferably formed integrallywiththe sleeves 50 surrounding the rods 47j andllS. The ends Yof the cables Vare vcarmed-around grooved portions of the .rocker p and inserted'i'n openings formed thereinjand anchoredptherein by solder Vor equlvaleni.

"-187 indicates as an entirety'the means for tilting or swinging the members 26 inwardly from their norinai or upright position and Yfor.controllingtheir movement from the tilt# edA position backV to ltheir "normal Vpos'it'ion;l j O`these-1neans,.88 indicates a motor which is KAsupplied" ywith current from the batteries` 2 .thecurrent being controlledby a controller SSyCarri'e-d by a bracket 88x. The l'motor 88 is'Y supported onf'a housing 89.;v The'housing .Y es

is :provided at its opposite endslwith projectingears f 90 secured to plates 91 which in turn fare secured to theupper ends of the uprightse.V Within the-housing 89 are zmountedfsuitable.. drums 92 `onwhich` end portions oi'a cable V93 wind or unwind simultaneously according tothe direction of ro-f tationfof the shaftv ofthe motor-88.2 v"The shaft of Vthe motor is automatically held against rotationor` freed by a magnetically operated brake, enclosed Ythecasing` 88a, one winding 72a of the electro-magnet being connected. in series with the motor,- andarrangedito release the motor shaft when the circuit to the motor is closed. Another windi ing ''ior the magnetic brake is also connected in the motor circuit, parallelltofthe motor, through a shunt S86 having a switch' 88o, as shownin 'the diagram Fig. 9, thepurvpose .of which 'will later' appear. f The `drums `92 are vconnected 'to a shaft'92armounted with- 'in ther casing 89 and :this shaft is driven VVthrough;suitable reduction gearing vthe'.

' like 'parts for operating the cables 75, 75a.

' The cable 93 is looped around a sheave- 9 4 carried Vby a strap or yoke 95, which is piv` oted' vonacross rod-96, the latter being supported bydependi ng members 97 fiXedto the v bridge 'members 35.

Sie@

'lin my ir'nproved construction, the pivot or shaft'v 24 for the swingable members26 `is, i*

i yarranged as :near the outer end of the low framefsection asppossible, so that the swingable members may be tilted' toan eXtreme position of inclination, as shown in Fig. 6, wl'lichposition is substantially 4:5-.deg'reesto uw vertical. when mais pqsaiomhioad Y carryingmember 31 vformsA a cradle for the load and'v thus eliminates danger of; the load or portions thereofrbeingjouncedgoi., Een this reason, the truck may beladvantageously j used forihandling and transporting packs j sheetsteel or other sheet material, whether such .packs are-crated or boundltogetherpolf:

in stacked, relation 'Y without binding means around the1n.f:,;` j:

- By incliningthe membersvf26 tion shown, 'all portions of the elevating ,mem-v: i

f berl 31,*,when moved upward as'shown in'Fig, 6iwill be; positionedvinwardly-.f of the `outer v extremities of the wheelsl 13; that is, the `free ends of the members 61will not project be-y yond the -wheels 13,` so'thatprthe truck'may be stored, turned f orgmanipulated 1 in 'Y a. `ref stricted` area. f. However, it will bef-noted lthat when they members 26`are tiltedgto ,the position `shown and the elevating member 31- is moved gupwardlzyzthe center of gravity of these parts, that is, 'themembers,26,guides1 Y 30'and elevating membery 31, moves or-shifts Y toa pointinwardly` ofthe kshait 211'.l Forthis reason I provide means,l ,indicated as anV entirety Aat 94m, forte) `yieldinglyfearresting g the -.i-nward 'movement' of. the members '26, j y

upon thee-stopping of the motor 88and for swinging orreturning thermembers out- Y j wardly, upon the paying outofthe'cable,93, r Vfar enough to shiftV thelcenterofl-.gravity outwardlyxof the shaft 24.11 `The arresting and return means 94m comprise a Qsetfof dejvicesbetweeneach swingable member 26 and the. iframe a1.'- As-these' .sets-of devices are similar. Lwill describe oneset kas .followszf` 95a: indicates a socket lor cupiniemberf-havL ing ears 96m pivotally connectedto avlug ,97x 'carried by Athe adjacent member A2b.v lThe socket .95m'forms a: seatA for one end` of a coiled spring 98,y the opposite end Vof ,the

spring-engaging-.ga bracket 99 inountedon the adjacent. side plate 1c or seated. ywithin-"nk Y a cup member 100carriedV thereby. #1017i in;V

dicates arod extending through the coils v`of *Y r compressedor e'xpandedand to. prevent'un- 1 due buckling thereof. The upperend of the rrod 101 issecuredin any'desiredimanner toA the bottomof` the socket 95:1;7 and centrally thereof;.theopposite end. ofthe rod extends through registering 'openingsvformed in: the

'cup member 100 andbracke't 99, centrally ofthe cup member,fthese openings being'large enough to permit the rod to rock or swivel f as wellas slide vtherein due tothe arc trav` ersed by the socket1`95-as them'emberfY 2.6 swingsinwardly kand outwardly."

92, and the guide l-frame is tiltesdto the lposi'- tion shown in Figs. Gand 7, thefsprings 98are compressedyso that upon y'the paying out fof the cable'the springisffwilli'swingthe guide frame forwardly.V 'i' 'z' f When the' cableV 93V is lwound on l the Y The construction so fardescribed,.except as to certain details noted, is similar to the vconstruction described and claimed in my corpending application Serial No. 336,963, 'iled Feb. 2, 1929 see Letters Patent No. 1,7 89,023, .dated January 13, 1931.) and no claim ismade herein 4to such construction. l

The limitmeans for shutting 'off .or stop'- 'ping the motor 88 when the swingable members 26 reach their limit of movement in either direction comprises a main switch mechanism 102 and ythe auxiliary switch 880 already referred to), both of which are oper- ;ated by Aone of the swingable members 26. The main switch mechanism hastwo pairs `of contacts and a .device whichl operates one .contact of .either pair .to break the circuit accordingly as .the members 26 move in one or `zthe other direction. The ,operating device is- 'connected to a rock shaft 103 to which is -ixed .an arm 104. The auxiliary switch 880, comprises ,a pair oi' contacts, the movable one ,of

which is normally biased into closed position .and operated Xto break the shunt circuit 886 by .cams 101i@ provided on the 104. tAs shown in vl? ig. 1, the members 26 .being atthe limit of their outward movement, `one cam v10aa', has engaged the switch .arm` 1046 and lopened the switch. Upon movement of the members 26 inwardly, the roller on the switch arm 104?)v will ride oii the adjacent .cam into the .space or -notch `between the cams, thus permitting theauxiliary switch to close; and v,asthe members, 26 reach their other lextreme fposition, the other cam 10aa will engageand operate Athe switch arm 1046 and .effect opening Aof `the switch and Ybreaking of the circuit across the'wi'nding 77m. As .the auxiliary switch is ,opened substantially simultaneous`- ly with ,the-operationof one pair ofcont'acts .of the main switch, it insures complete .cut out of vall .fmagnetic lux `so that ythe braking 4elements can operate effectively to` stop the motor 4and prevent overrun thereof. Y The ,casi-ugs for the main V.switch mechanism 102.

.and Athe auxiliary switch ,are supported by a bracket 105 fixed tothe adjacent bar 5. The main switch mechanism102 and the auxiliary switch 88e are similar in construction .to those used forcontrolling the motor 71and braking means therefor (see Figs. 8 and 8a)V which .are ,hereinafter more clearly described; y

Thefouter end of the arm 1404:"is Abifurcated and the .bifurcations are hollowed oiit to form bearings for a block 106, capableof rocking therein. The block is formed with .a .transverse opening to slidably receive a rod 106a pivotally .connected at its .outerend ,to a ,bracket ,107 ltixed V4in any Vdesired `manner to theadjracent swingable member '26. At

opposite sidesof the arm 104, vthe rod-106eV carries adjustable gtappets 108, the 'outer one .of which engages and moves -the farm 104 .in ,one direction to open the motor `circuit and shunt when the `members 26 approach their limit of movement inwardly, as shown in Y 6and the other of whichlengages and moves .the arm in the oppositedireet-ion t0 open .the motor circuit andshunt whenthe members -26 approach their limitof movement inthel outward direction, as shown in Fig. l. Y The limit means for `stopping themotor l88 are arranged to break ,the circuit when the membersV 26 approachtheir limit of movement-and thearres'ting springsare of such ystrength thatthey Varrest and support ,the members 26 at their inner position .Whether .the-elevating member is loaded, andlwithor without a load, itis raised to its highest posi- .tion.;To tiltthe members 26, .the cablev 9.3 is wound on .the 4drums 92, Athereby pulling .the upper endso-f thefmembers 2,6; inwardly opposition to the Vsprings 98 until the motor is stopped. l/Vhen thel inotor 'is stopped .the `drums will be heldagainst rotation; hence the ca ble93will hold -the members intheir inclined' position .and prevent the-springs 98l ir; 0m moving the members :,o'utvv,arrily; but

as i

trol of the .drumsor the ,motor 88 for .driving .10.9, 10911d9ate. lPair ofspced side plates formed with' l pairs of aligned -openings, .the shaft vor `fulcriiml 2li, eXteIlidng through one-pair of .openingsand -ra rod V1,10 extends through the other .pairfof openings, the rod V110 ends in openings 110e .formed in the: members U-.niember ywill later appear. Suitable .sleeves 1,13 are .interposed .between each side of the U-me'm-ber 1,12 .and the Vadjacentiplate ,109 and between the `vlatter and the-,adjacent swingable member 26 tomaintain -thenrin being supported at Yitsopposite los 26, whereby the platesjl09 aregsupported Y indicates shaft supportedrfat side plates 109 neartheir 'lower, ,innefr rv ends Aand forming 1a pivot for. a framefi-ndiino rigid relation to eachother and the vmembers o Y `cated .aszan Bltirety'at 11.15. 5 lThe `trarne `11,5 y

standing spaced plates 1217+112@ 118 118e,

connected attheiriupperends angleslle.

01.1 which the Shea-ves isoV :alignedfopefnings 1,20 through'which theshaft 24 extends, but these openings 120 are somewinni/ft Alarger V'than the shaft to permit the 'frame 115 Vto swing about its pivot'l 11,4 to 'a limitedz extent,thewalls of the openingsj120 1115`ialso'includes Va Asupplementall 'Ufmember j member" 121 supports@ pair.. of angles 122,` infwhic'h is mounted axshaft 123. Thefshaft 'rotatably Asupports ka plurality offknuckles,

-i124: having Vseeurredto them rod's'125V which extend inwardlythr'ough suitable openingsVV VVV'formed in the base portionofthe' Umemberv v112, lthese lopenings being llarge enough to-,Y` V'permit therods 125 to freely 'slide and'iswivel y. therein. `"Interposed betweena` suitable collar adjacent each knuckle 124`an'ditheUmember 112is` anje'xpansi'on spring 126"eoiled around the adjacent rod, whereby these springs nor- Y ,e mally tend to swing the -frame 115'Y about its gfpivot 1121r -relativeto the swingable membersV 26, Vin oppositiontolthe vpullof the cables 75, "75a, so YVthat uponthe occurrenceof slack Y :therein "due for, j example to`V the' elevating if memberf engaging jan Yobstructionl 'VA (see 7 the. downward movement thereof, thesprings 126 will move thejframe 115v as describedfj As the sheaves 76,.'76a,are

"s11p-ported'V :by `this@jframe, Y their f movement f v. about '.li shaft 11.4V with theframe 115 will fake-11p such Suck. e

pkjIfprovide i a limitswitch mechanism rv"for `-stopping the motor 71 when Vthe elevating Y vmember 31 reachesY its `limit of movement fin" either direction.l This'mechanism is asso- 'ciated with'the slack take-up means in such manner that "itwill stop the motor 71 while the' frame. V1-15 Vis moving from the position f shown infliligs. land 4g, to the position/'shown inV Fig: 7,*so ythat the 'swingr'of theffram'e 115v fmaybe advantageously limitedkand danger f of undue slack'occ-urring,inthejcables before VV'themotorf;is' stoppedis'j avoided. jj i n 127 indicates a bracket secured tioA 'onel ofy Vthe -`ai1,'f':,` fl`esfl `122,7`and extending rearwardly ytherefromi1 AOn its Yinner yface the bracket Y .supports aca'sin'g 128 enclosing-a main switch yme'cjhafnism'129'v V( see Fig'. 8)VV and sailaterally'-V bentfportionf127afof the" bracket" supports al Y "casingfl,30, enclosing an auxiliary switch 77 'f 'lj(s e"e Fligs.Bafand'tl).V i The main'switch mechariism compriseszpairsof contacts 11321-1326,

' fait@ reassigned, @magnetica a@ maar siena l i "passes as the motor 71 is 'operated in one di-V rection or the'other, and anoperating device arranged to move the; movable contact .|573 'Lef 132 lof Veither pair to break the" motor circuit accordingly as the elevating member 31' moves to its {uppermostfor lowermo'st position. 1

The operatingdevicev 133 is ,fixed toaY rock shaft 134:'towhich is connected'exterior of A"the *casingV 128 a bellcrank 135,'one`arm 135a of which is .pivotally yconnected to the lower Y Yend of'a rod v136. lThe upper end of this 'rod is'pivotally 'connectedto one end of the rocki er 79 (alreadyreferred to) rotatably mounted Y on the shaft 29. From the opposite end vof the rocker depends'a 'red 138: guided at itsglower" i ,end in"` anopening` formed yin a Ybracketsr139 which'is mountedzona'cross'plate 140.51m? ported'betw-een the guide's30.The red 138 Lsg' carries'- collars 139a,"139d, adj ustably fixed .theretoyarranged to be:engagedlbystrikers v '14Qbp,"140a, respectively, when the :elevating member, moves upwardly or gdownwardly.

l The' strikers `are fixed tto'. thev 'bracket' 7 8c, Y as eo i sho'wnin' Figs.v` 6 and 7. When thel striker Y 1 140m engages' the collarr1`39a, inthe upward y movement'of the elevatingY member 31,Y itY op'- erates through AtheA rod-138, rocker f79","rod 136, lever'135 and operating 'member 133to Y open one :of the pairs of contacts 132%132@ the effect of'rwhi'ch is to break the mtor eir-y i Y Icuit; likewise, when the i striker 140e@ Ven -F-"f` j gages the collar 139a, inthe downward moves-c Y mentof the elevating member 31,?it operates- Y'through'thesev parts to open the ether pair of ,contactsand thusfbre-akkthe motor; circuit.

The lever or bell-crank1315'isprevidedfwithY e an arm' 14:1' the free end of which normally en- 1 g gages a, rollerV on a lever Y1512 connected to the movable y,contact ,of the lfsi'vitch 7 7 x (which is y normally biased to vopen 'position a spring Y Y 13100) and `holds the switch closed. Accord fr sidewall of the; U-'member 5112. v. 144 ind-i'- rotatably-mounted on thepiyot" 1413i The rod ingly, when thefl'ever'135fis operatedasfjust n Y describ'ed,fthe armlli'simultaneouslydisen Y "gages theroller'on the'leverz142 'and allows ',110 n vthe"switchtoopern'thus breaking theshunt 'v f circuitfthrough"the,winding 77a for'f the Ymagnetic brake. V4 Y f" 7 Theconstruction ofthe main switch mech- Y V'anisms 1021 vand 129 disclosed herein are pref-` 11,5 erably constructed Ysimilarly to :the mecha' Y nismj shown-and claimed Vin'Letters Patent YNo.'1,726,717,dated September 3,1929. Y; f i l The connectionbetw'eenthe other arm 1351)Y Y of the bell crank 135and one of'thefswingable Ymembers 2'6comprises the following: 113V Yin- ,Y {dicates a pivot orstudshaft providedff'on one Vit 'teca-esa tween each collar' and the 135501- the 'block-145m a compression spring 147, which vforms the connection betweentliearm and the rod. Accordingly, when the sheave Icarryingi-Iia'me 115 swingsv relativegto the swing- .able members 26, dueto slack` occurring in the cablesT-'cgthe'springs 147 willhol'd the l arm 'A135'l substantially stationaryt while the Casin g 128 for the switch' mechanism '129 moves withA the fname 115,A the -efi'ectoif' which 4isftoroch the shaft 134 and operate the 'arm 133af'ndthus1open one pair of switch contacts 13241-32c. 1Such'operatic-n ofthe arm 135 will also operate Vthe auxiliary vswitch as already described.' By pivoting the rod 144 as described, it accommodates 'itself to the positions of'f the outer end of thearm 1355 as the 'casing 128 swings Vwith the frame 115. VBy providing spr-ings lbetween the opposite sides 'fof the arm 135?) and the rod `144, the yarm 135?) is permitted to VmOVeLrelatVe to therod in leither direction, when the lever or bell-crank is operated by theengagement of the elevating member with either yone of the collars 139e, 139e.

v From the foregoing description, it will be noted that `a vsingle cut-'out` mechanism comprising a main lswitch mechanism and an auxiliary switch serves to stop the motor 71 in 4"the event the elevating member 31 reaches its limit of movement in either direction or slack 'occurs in the hoisting cables. WVhenthe elevatingfmember 81 effects operation of the 'switch mechanism, that is, opening of one pair of contacts 132-132a, reversing of the motor 71 and movementof the elevating member 131 inthe opposite direction will permit the rod 138 and partscoiinectedthereto to return lto normal position Vunder; the influence vof a vspring I13825 ig.j5) surroundingthe lrock shaft r41345130 which Athe operating 'device "133 and bellcrank135 are connected, such `spring being arrangedl to bel put undertenl-V 'Sion'w-hen the device 133 movesin either'direction. vAlsmaftei1 slackoccurs in thecables 75, 75a, `and Athe Vswitches halve been operated fasfdescribed,'reversal of the Aniotor-Tl to wind VVup the cables will swing Etheframe 115 to its normal position(Figs."1` and 4) and :allow the switchesto assume Vtheir norma-l position.

-Retemingto thediagram in Fig. 9it will be-noted fthat the magnetic brake ivtor eacl-i'ot 'the motors '71 and 88 hasacompound wind- `i-i'i'gfan'dfthecircuit for one winding is shunt- 5 led across the'motor, as shown at 7 6, l88?), re-

'specti'vely, so that sufficient current will iiow fthrougli'the magnet windings toinsure'the release oflthe brake when loads are being lowered. The compound Y'windings for the maglnetic kbrake' associated with the motor 71 are shownat-72a, 77a, the ylatter being connected inthe-shunt circa-it 76; and the cempoui'id windings 'for the magnetic lbrale, as- 'soiatedwi'th the motor88 are'shown at 72d, fzc,"fthe latter being -conne'ctedin the/shunt circuit 886. To prevent thezfgeneratedlcurrent incident to the rotation of .each motor from maintaining the windings of the adja. lcent brake energized olloviring the breaking'.

of the circuit through eitherpair of switch contacts of the adjacent :main .switch mec'hae nism provide in each s'hlun't circuit La switch (herein referred to a-s Lan auxiliary Which/is operated bythe device 'thatcoperates the adjacent main switch mechanism and subst'anti'aliy simultaneously therewlitlnito breaik theshunt circ-uit. Fiorexamjp'le, whentheelef vating member 231 is raised orf-lowered 'to either extreme position,one pair offswitch contacts 132-1132a/l of the switch mechanism i opened to break the rshut circuit l88?) through the winding `7 7 m", thereby completely-climivnating danger of magnetic ilux in 'either olif both windings 7 2a, 77of the'adjacent mag netic brake. v V i In Figs. 10 to 14,linclusive, I `have'shown a.

truck similar to tha-it shown in Figs. 1 to "7, inclusive, buthaving lembodied in itdiiferen't the auxiliary 'Itheshuntcirforms ofjcutout mechanismsfor,thelmotors-V f lwhich respectively tilt the `guide frame {iii-V 'wardly and raise Vand glower 1the. elevating 'memben ,l f 1 H I 'f' Referring to these views, 157 2i'ndicatesithe truck frame 4mounted ontract'ion wheels' 1*2 and load supporting wheels '13 connected tofgether for simultaneous steering byqsui'tabl'e connections 1'8". "24" indicates a shaftsups #ported similarly to the shaft 24. 26 "indicates the members -swingable on the "shaft 24 inwardly and outwardlyand supporting atltheir Upper en ds guides y30', wherebythe guides may be tilted inwardly for reasons vindicates the `elev'at- "already set forth. 31 ing member, which is-moved upwardly and downwardly/cn theguidesfBO". a cable which "loops around "a 94 lpivotallyjconnected at 96 ends of the guides as already describedfthe ends of the cable being connected to a 7pair 'offdrums 'which are rotated together "to wind guide sheave 93 indicates Y `to the upper aies y iiic or unwindfthese ends amotor the'` shaft lci" Y whieh'his fbriked fby a :magnet-,waere con;

nected 'in serieswith the motor. The motor whichv drives the drums tc 'effect swinging of `Athe members '26 and tilting-of *the Y guides f 30 and the'brake :for the motor are notk-showm,

=butfare similar tocoiresponding-parts shown 'in Figs. 1, 2, "6' `and '7,

as already ldescri'bed.

Y A76'76a,, mounted on a and sheaves77f` Vsupportedat the upper ends v:s

Y. Theswingable frame 115' Y shaftlliif When slack occurs in v752 7 5a" indicate lcables vconnected to .the elevating motor71- and reevedA over sheaves svvingable frame 115',

` fof-the guides and connected to an equaliz- YVe178 on the elevating me'mber31f.V

the cables 75a, thetsheave's 7 6,"7 6a', beingmounted/on this yrameas already described in connection .With Figs; 71,1 2, 3, l1, 5,

' vindicated as anentiretyat 149, Whichbreaks .the circuit tothe elevating motor 71', so lthat ja-description of this latter rmechanism will sufiiceforboth. Y. 5 j 1 Of the cut-out mechanism 149,; 150 indi- Cates .a casing: comprisinga base 151, :having `side Walls-2152 and a cover153.";{Qnefside AvallflQ-isg secured to af b`rackjetj154l:rk cari .riedfby.the. adj acont-,side plate117- Vof the tedfatits ends inthe Vside Walls 152I and carrying a drum 156. The drumV is provided Vvvith a contact plate 157 which Yis-engaged andldisengaged lingers kconstituting the auxiliary switch 7 7 as shown in the diagram 9) The drum 156 *is alsof provided', with f a contact plate V159 Y i sh'apedas shown; inl Fig, 16a), which isen-l fingerltiOconnc-ctedto lead 1600;)

andiengaged and disengagedby Afingers 1161,

' g( connected tofleadsl v161a., 162er,V 'respecztively) plate 159 and 'fingers 1160,l 1.161,

162,',constituting the main switch mechani'sing Figs, 1,5 Vand `16 1 shew the normal position oi fthe drum,` that lis, With fthe- Stingers Y158 in 1 engagement g .with the-f .plate 157 :andi/the "fingers,v 16,1, j.162,"fin engagement itl ,Willebe' noted! thati it ,the fdrum-is' rotated Vein;onefdirection (clockwise 3Sevievve lin`Fig- 151), due to the' elevatingnliember reachingfits f yupwfardf-limitfofmovement,-the platef157lvvill fmove beyond the iingers158iandthus break the shunt vcircuit 76 i Iandffthe frplate' yA159"v will lmovebeyondtheffinger 162; and Vthus break motor circuit and1de7energize the'vvindbeyond :the

swings .on the Vtion,"therebybreaking the shunt circuit and ,i

takef'up; mechanism indicated :as an :entirety ing member 31',y

' securedv to the adjacent vbar 5 i by contactlingers 158isuitV fablygsu-pported by'one sidey Wall152gandvcon-y v, nected'to leads76b, 7 6?), th-is plate Vand these By reference to Fig.j16a,V

ing 72a of the brake and-if Ythe drum is ro-r tated counter-clockwise :dueto the r(Ya) Y,ele-V f take-up mechanism, the. plate 157 will move fingers 158 inthe'opposit directhe plate -1 59.vvill move beyond the linger 161,

thereby breakingfthe motorlcir'cuitand deenergizingvthe Windingl 72av ofthe brake.YV

135'.' indicates azbell'crank fixedvto one end Vot" thev drumfshaft v155.5]Tl1e armv 135m ofthe vating member reach'ng its vdo'vvnvvard limit' o-frmovement or (b) operation ofthev slack 70 `V bell crank is pivotally'connected to a rod 136;', Y Y andthe upper' end of thefflatter is connected to thelever'79-', which in turn is pivotally connected to the rod 138 carrying thetappets 139m, 139m, adaptedtobe engaged by strikers139b, respectively, lixed to the elevatinner ends 'upon diametrically oppositerfsides oit' a collar 164looselymountedon the shaft between the adjacent side Wall'152 andl Y The other arm135b ofthey Vbell crank is provided with va lateralfinger.. 135m (see Fig. 16) disposed between a pair of f Varms 163, 163e, pivotally mounted at their the bell crankf135. l/Vhen the drum 1 56 is in' Anormal positionV (as shownV in-Figs. 11, -15,and'

16h-,the arms 163,163@ Will be disposed-sub# stantially parallel to eachother upon oppo- 26. Theouter portions of the arms 163,

163e, are formedwithlopeningstelohgated ,1602-2 mounteda rodl66=extending`toeither side "of the arms', a recess 167 being formed, in the longitudinally of ther4 arms) in Whichis pin 165l toaccommodate the rod. i 1681indi- -cates'a spring coiledaround the rod 166V bevtween each armv 163, 1630i,l andav collar` 169 f adjustably fixed to the'adj acentouter portion Vof the rod `by a nut and normallyl'tending .Y

to maintain the adjacent arm in the position shoivvnin Fig- 15. From the foregoing de `scription itl Willfbe Vseen'that through the coaction. of the springs acting simultaneously toihold the `arms 163, 163m, in engagement Will'serve as a connection `between the Ul-.mem-y ber 112andvthe bell-crank arm 1356.'so that v :with the pin 165 and finger 135:12, ytheseiar-msv in the event the sheavecarryng frame 115 (which carries thefcasing1150)fsWings about f the shaft 114,-du e to slackoccurringiin the 'cables 75,75a,f .the-outer endof the arm 1356` 'l Y VWill'- beheld relativelystationary vandrthus n effect arotationof thedrumshaft 15,5, Wherej bythe motor circuit and shunt circuit VWill beV broken as already described. When theelei 'Y lvatin'g member `lower position 31V is movedto its "extreme (see Fig; 10) the bell-crank Y Y 1,35 and drum156 vare moved-counter-clock; I Wise, but as the arms163,l163a,are swing- ,k Y able independently avvayfrom- Veach other, it.,V

Will be seen'that the m1111355 of thegbell-,j j crank V, vvill'; swing 4the arm V163e; laterallyflgllj j ysite sides of the ingerf1'35 and apin 165V 9,5 Vfixedfato-,the U-mernber'112 which is 'connected' to and nieves with ithe svvingable Amembers compressing the adjacent spring 168, Whereas thepin 165 will hold the other arm'163 stationary (see Fig. 10) likewise, when the elevating member 31 Vis moved to its extreme'v` upper position, the bell-crank arm 135,5 (which is swung clockwise) will swing the arm 163 laterally and the pin 165 will holdthe other arm 163e stationary.

It will therefore be seen that through this compensation connection between the belli icranli 135 and the U-memb'er 112', the cut-out mechanism is operable independentlylof and Without affecting the take-up mechanism; It will also be noted thatl the cut-out mechanism i, is operated by the elevating member 31 and the slack take-up mechanism 115m in any position to' whichvthe guides maybe moved.

To those skilled in the art to which `my invention relates, many modifications and embodiments of the invention and applications thereof will suggest themselvesv Without departing from lthe spirit and scope thereof. The description and the disclosure herein are purely illustrative and are not intended to be A in an sense limiting.

IVhat I claim is: 1. In apparatus of the -class described, the combination of aV Wheel mounted frame, a

guide frame thereon, an elevating memberV ,mounted for movement along said guide frame, a flexible member connectedV to said elevating member for moving it along said guide frame, a sheave at the upper end of said guide frame and around which said flexible gmember is reeved, a support movably mounted on one of said frames, near'thelower end of said guide frame, a sheave carried by said' support and around which said flexible member is reeved, means for winding up and said flexible member operating through the sheave on said support to-move the latter in one directiomand a spring normally acting on said support to move it inthe opposite direction l 2. In apparatus of the class described, the combination of a Wheel -moiinted`frame, Ia

guide frame thereon, an elevating member` mfounted for movement along said guide i; frame, flexible members' connected to said elevating member for moving it along said guide frame, sheaves at` the upperend of said'guide frame and around whichsaid flexible members reeve, a support movably `the Vopposite direction.

mounted on one of said frames and comprising spaced side members,sheaves carried by the side members of said support and 'around' which said flexible members re'eve, means for simultaneously Winding up and simultane- Vously paying out said flexible members, the

pull on said flexible members operating through the sheaves on said support to move the latter'in one directiomand a spring-noi? mally acting on said support to move it in u pay'-V -',.'ing out said flexible member," thepull on g Inapparatus of the class described, vthe combination'of a wheel mounted frame, aj

guide frame thereon, an elevating member mounted for movement along said guide frame, flexible members connected to said elevating member for moving it along saidV guide frame, sheaves at the upper end of said guide frame-and aroundwhich 'said flexible membersreeve, asupport movably mounted on one of said frames near the lower end of said guidefiame and comprising spaced side members, ,sheaves carried bythe side members of said support 'and around which said *flexf iblefinembersreeve, meansfor simultaneously Winding up -andjsimultaneously paying out said flexibleiinembersfthe pullon said flexible members operating 'through the sheaveson said support to move the latter inone direction, and asprifng normally acting on said i support to move it in the opposite direction;

4. In apparatus ofthe class described, the

combinationof awheel mounted frame, a memberpivotallymounted at its lower end on said frame'and swingableiiiwardly and Aout- `wardly, Va guide frame pivotallyconnected to the upper end' of said swingablemember and* i having movablel engagement at its lower portion with said firstmentioned frame, means for swinging said swingablemember, an ele-` vatingmember mounted for movement along said guide frame,a flexible member connected' to said elevating memberfor moving it along said Yguide frame, a 'sheave at .the upper end of said guide frame and'around whichsaid lexible member is reeved, a support mountdv ed on one of said frames to move relative to said swingable member, a sheave carried byv said support and around which said flexible l member is reeved, Ymeans for Winding rup and paying outxsaidflexible member, the pull on saidl flexible member operating through the sheave on said support to move the latter in one direction, and a spring normally'acting Y 1 on said support to move it in the `oppositeV direction. Y Y 5. In lapparatus ofthe' class described, the

combinationrefza Wheel mounted frame, a

member pivotallym'ounted at itslower end Von said frame and swin'gable inwardly and outwardly, a guide pivotally connected to the upper end ofisaid swingable memberl and havingfmovajble engagement at its lower p01"- tion Vwith saidV frame, means for swinging saidk swingable member, an elevating member Y mounted for movement along sai-d guide,y a

flexible member connected' to said elevating memberrfor'moving italong said guide, a .Y A sheave at the upper end of saidV guide and f y, ingl through thesslieave on'said support to' move the latter in one direction, and aspring f l normally acting on said support to'move it in v said ,flexible member, and/means carried 4by fito@` f tliesheave onsaid support tomove the latter Y V combination of a wheel mounted frame' in one direction, and a springnormally Yacting'on said support to move it in the Vopposite directioii. u Y p 6,.` InlV apparatus of the class describedythe combination of a wheel'mounted frame,a pair v of spaced members pivotally mounted at their lower ends on saidl frame and swingable` inn i l wardly and outwardly, a guide pivotally con nected to the upper ends of said swingable 'members andrli'aviiig'movable' engagement at its lower end with said frame,fmeans for swinging said swingable members, anV elevat'- *Y* ingr member vmounted for, movement "along-f V- 15 saidl guide,- a flexibl'efmember; connected Ito'` saidV elevating memberifor moving itl'along 1` f said guide, a sheaveat'the upp'erfend of said guide and'aroundwhich saidflex-ible memberli's reeved,fa,supportbetween and mount-A ed-,Yon said swingable `members .belowtheir v upper' ends to move relative theretoa'sheavefcarried by .saidfsupport land aroundwhich* j said flexible member is reeved, meansyfor Vwinding up andpaying out said flexible mem-V ber, the .pull on Y said flexible memberY `operatthey opposite direction.-

7 In apparatus oi thefvcl'ass described,"

combination of aV wheel mounted, i'rame,j`a

.member pivotally mounted/'at its lower end-` vonsaid frame and *.swingable inwardly-andoutwardly, means forswingingsaid swing-fr swingablemember yand carryingra sheaveV able-member, a `guider pivotally connected to theupper portion .of saidjmemberr and mov'f `connectedy to saide'levating memberffor lmovc ing'italong saidguide, aslieave at the upperv 5P,

' through the sheave carriedgby saidv supportJ` ,to swing thelflatter lin one direction,I andi a end ofsaidguide and around which said flexi-v ble memberfreeveameans for winding'upand Vpaying out Ysaid 'flexible membenand Ameans carried by said swingable member Vfor takin'gf up V"sla'c'k'in said flexible member.

8.7In1 apparatus ofth class'de'scribed, the l combination of a wheelj'mounted- `frame,` a member rpivotally mounted at its lower.' end 'of'.,said frame an'dfswingable inwardly andV f outwardly, :means :for vswinging said swing-l Y able member, a guide kpivotallyconnected tof theupper portionof said-memberfand movably engaging'saidframe at' its'lower portion,r

v,anelevating member. mounted Vfor movement along said guide,y a flexible member connected vtolsaid elevating member for moving itlalong Y saidguide, aY slieafve at the upper Veiidof said guide andaroundfwhich saidfflexiblemember reeves, means for; winding up andpaying'out saidf'swingablelmeinber for taking up slack in said flexible member,-said means including Lacasse air of Vinner and outer members Apiyotally 'connected at their uppery ends, theinner inem-v beribeing pivotally mounted at its lower end onfsaid 'frame and swingableinwardly and outwardly and theouter member Ymovably engaging said frame'at its lower ,portion andi serving asa; guidemneans for swinging said membersrelative to said iframe, an elevating member mounted VYfor, mCWementLk along said y'guide member, -a flexible member'connected a to said elevating member for moving it along;y

saidf guide menfiber,l asheavey at the upper ends of said innerand outerinembersand around which said flexible*-member,reeves,1 means `for winding Yupfandk paying outsaid flexible member, andmeans carriedjbyone of said iirstmentioned members for taking up slack insaid-flexible member.

l0. In a'pparatu'softhe'cl ss described, the* combinationy of awheel'mou'nted Yframe,a

`so y i member pivotallyinounted atfitsplower end l iupper portion of saidmember andmovably on said frame and swingableinwardly 'andl engagingvsaid framei at itsilowerportion,`

means for swinging said swingable member, f an elevating member mounted for movement along-said guide, aflexible kmember connected kto saidelevating memberfor moving it along said guide,a sheave'at the upperen'd of said`Y guide and around which said flexible member reeves, a supportipivotally mounted on said around which said flexible 'member isreeved,

oplening'through which 'the Vpivot for; said flexible" memberl extends,fmeans for winding fY upQand-payin'g outfsaid flexible member, the ull kon' said@V flexible member operating spring normallyf'acting on said l'si'ipport to swing it inthe opposite direction fornitakingy up slack ,iii said :exible -membenY f on said, frame and swingable inwardly and loutwardly,vmeansY fory swinging Vsaid member, Y n a guide pivotally connected to the upper end of said swingable member Vand having movable Y Y engagement'with said frame, an elevating .Y :inemberzfmounted for movement along` said@ guide,a flexible memberconnectedto said ele-Y Y vating membervfor movingVit-alongV said f guide, a sheave'at'the upper end of Ysaid guide'A l Y' .and around which. said flexible memberris; =reeved,a support mounted on said swin'gabl'eV member to -move Vrelative thereto`,a sheaveg` Y carried by said-supportandaround .which'f .Y said 'flexible member isv reeved-, means lforf' winding up. and paying out said.flexible-me'mey Y ber, the pull on said flexible member opera-tf* ing through the sheave `onsaid support to move the latter in one direction, a spring combination of a wheel mounted frame, a4 member pivotally mounted Aat its lower endon said frameand swin'gable*inwardly` and outwardly, means for swinging said member, a guide pivotally connected to the upper end of' said swingable member and having movv able engagement with said `frame, an elevating member mounted for movement along said guide, a flexible member connectedtto said elevating member for moving'it along l said guide, a sheave at the upper end of said guideand around which said flexible member is reeved, a support mounted on said swing-v able member to move relative thereto,asheave carried ,by said suppcrt'and around which `said liexible member is reeved, means for winding up and paying out said flexible member, the pull on said flexible member' operating through thesheave `on said support to move `the latter in one direction, a spring'l normally acting on said: support to move Vit in the opposite direction, a mechanism on said support having means arranged to be engagedand operated by said elevating member for stopping said winding up and paying out means, when saidelevating member approaches its limit of movement in'one direction, and a connection between said support and the last mentioned means for stopping .said means when said support 1s actuated by said spring.

13. In apparatus of the class described, the combination of a wheel mounted frame, a member pivotally mounted at its lower end on said frame and swingable inwardlyand outwardly, means for swinging said member, a guide pivotally connected to the upper end of said swingable member and having movable engagement `with said frame,` an elevating member mounted for movement along said guide, a flexible member connected to said elevating member for moving itralong said guide, a sheave at the upperend of said guide and around which saidflexible member is reeved, a support mounted `on said swingable member to move relative thereto, a sheave carried by said support and around which said flexible member is reeved, means for winding up and paying out said flexible member, the pull on said flexible to move the latter in onedirection, a spring normally acting on saidsupport to move it in the opposite direction, a mechanism on said supporthaving means arranged, to be engaged and operated. by said elevating mem said support.

member op-V erating through the sheave on said support ber forstopping saidwinding' up and paying out means, when said lelevating member: ap-l proaches its limit of movement in one direc-YV tion, and a connection between said' support` and the last mentionedrmeans for stopping 70 said means when said support is actuated by. said' spring, saidiconnection including com-Y p ensating .means to permit operation of said mechanism independently Vfof' movement of-A Vla. In apparatus of the'class described", the f combination of a wheel mounted `frame,ia` member rpivotally mounted at its'lower end' on said frame andl swingable inwardly and outwardly, means for swinging saidmember, 80T a guide pivotally',connectedfto the upper end `of said swingable member and having movable engagement with said frame, anf elevating member mounted for movement. along said guide, a flexible member connected 85. to said elevating member for moving it along said guide, asheave at the upper end of said guide andaround which said flexible mem-h l' ber is reeved, a pair ofsupportingl devices'.k

mounted on said swingable member, onecf 901'?,

said devices being mounted to move relative to the other, asheave carried by said move* able devicefand Varound which said flexible' member is reeved, means for winding up and `paying out said flexible member, the fpullfQ- on said flexible member operating through the sheave on said movable devicetoymove the latterrin4 onedirection, and a spring bei tween said devices normally acting thereon,

to move 4the movable device in the opposite 100 direction. i i l5. In apparatus` of the class described, the combination of a wheel mounted frame, a member pivotally mounted Vat its lowerend Y on said frame and swingableinwardly'and 105 outwardly, means for swinging saidmember, Y a guide pivotally connected to the upper end of said swingable member andhaving mov? able enga-gement with said frame, lan elevating 'member mounted for movementalong 110 said guide, a flexible, member connected `to said elevating member for movingV it along saidl guide, a sheave Vat the upper end of said guide and around which said flexible 1f member'is reeved, a pair'of supportingvde- 113,

vicesA mounted on' Asaid Y swingable member,

one of said devices b-einggmounted tomove' relative to the other, a sheave-carried bysaid movable device andfaround which A'said fleXi-' ble vmember is reeved, means `for'winding upV 1420- and paying outsaid flexible member, the pull on said flexible member operating `'through the sheave on said movable device to move the latter inone direction, a spring between said-1 `devices normallyacting thereon'tofmove the 1215 movable device in the opposite direction, and l a mechanismion said devices Vhaving elementsl arranged to be engaged and operatedby said' elevating memberfor stopping said winding. up and paying out means."A Y

Y l 116. iInappaiattis" orf-the elassdesoribed; the

oombinationlot anwheelm'ounted trame, a 'member pivotallyA mounted-att` its lower endr Von said frame, a guide pivotally connected to '.f5 the. upper portion of said swing'able; iiien'iber.,V

.an elevatingmember movable valong* said guide, Vmeans for swinging; said ',swingable member, :a flexible member connected tosaid elevating member,` for inovingit;` a she'ave 710'; aroundlwhich said iieiiible member iis reeved,

' mounted 'at the upper end` of said guide, a

support movably mounted on said swingable-l memberand carrying a sheave around which said flexible member is reevedT means for,

153 winding up and paying out'said {ieXible ineinber,v thepull on said iexible member operating through` the she'ave V on -saidsuppert p V"i'novettlielatter in onevdirection7V aspring outwardly', means for vswingingsaidineiriloen guidepivotally'oonneetedtothe upper end i tit-said swingable member andi;havingmov-7V Y able engagement with said'trame', an elevat-k u y ing member` mountedrormovemen't along said Y Y guide,V la'fleiiible member connected tolsaid 3545i elevating member` yforinovingit along said guideya sheave at the upper end of saidguide Vand Y. aroui'id; whicligsaid .flexible member. is reeved', a support mounted on said swingable member to lmove relative thereto,asheave fflpiearried by saidsuppert and around which f saidgfflexible member Y is'- reeved,"` means for. Ywinding up and paying outjsaid flexible meme` I, beni-the'pull jon saidftlexible memberV` operating through the sheaveon said* support to,

45 movethelatter in one dire'otiongav springnor-l 1 mally acting onsaid support tomove it in the Y opposite direction, La mechanism onsaidsupport having means arranged toY beengaged andv'operated by saidgelevating'member tor 50stc'ippin'g-j said winding up; and p'ayingl outV means, when .said elevating `member .ap-

proacles its limit of-movementin one direo- `tor,-and. the other of which is connected in* Velevating member; V-'mountingsaid first mentioned slieave on one e Lenzi-,ew f

load. handling member movably mounted orf' Y said frame, and' means for moving saidmem-V Y Y ber, said meansvincluding anelectricmotor,A a source of current supplya 'circuit between"v said motor and saioL source ofcurrent supply, a shuntjn vsaid'oircuit arranged parallel :to said, motorl a magneticallyk operated brake means for said motor, having windings, one of `whichisoonnected in series'with saidmo-,

said shunt Circuit, a switch ineehanism inthe: circuit rorrsaidmotor, a switch in said shunt i Y circuit,v means loperated said member for i operating said switchand switch mechanism` substantially simultaneously, r and.y a manual# Vly; operated switch orsaid, motor circuit.V s

1.9. ln an industrial truck, thecombination y ota wheel mounted ramejanY upwardly ein'Y tending-guide frame thereon,A a guide sheave toria flexible memberga second guide -sheave Sag Y for the flexible ymember supportedjat the lupperiendot'said lguide traine, an;v elevating K member movably mounted von saidguide trame,v a hoistingmeans for said elevating member comprising a power driven drum and i a flexible member arranged to :wind on'V and' off said drum atits inner end,fengaging `said i sheaves and connected vat its outer end to said means for movably 1 or" said trames adjacent the lower portion v or f said guidefframe to'move in a direction substantiallyin a plane extending between the'YV or y runs otsaidtlexiblemember at opposite sides of said'irst'mentioned sheave',A .andmeans'f 10o Y normally' acting-on VsaidV slieave mountingmeans to move said sheave in adirectioniop# posite tothe ipull thereon'exerted by 'said'k 'flexibler member. L Y' j Intestiinony whereotf,` Ihave hereunto sub1.VV seribd.myname.Vv f Y i sennweiinnl tinnen .1

tion,v and-arconnection Vbetween saidsupport 1 and the: last'm'entioned means for stopping 55 j said Ymeans Vwhen said 'support-is actuated by saidspring, said conneetionincludingalever arm-,repair kof arms on i the opposite sides V of Y saidlever arm swingable relative toea'ch y Y n otherfarodfsprings carried by theirod nor;Vv Y Y 670VY mally tending'to swingsaid arms toward said lever arm anda device carried by said swing-M able jinemberfj andi'VV disposed between.' said-1'v f f .Y

-swingable arms. Y

ejllln apparatus ot theblassidescribeiftheV .i fie'mbinationot Va wheel'.mounted,iframe,V al

suf"

CERTIFICA'IFJ 0F CORRECTION.

luatent No. 1,904,934. April 18,1933. EDWARD H. Renon.. i

it is hereby-certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 9, after line 27, insert the following as claim 1:

l. ln apparatus of the class described, the combination oi a wheel mounted frame, e guide frame thereon, an elevating member mounted for movement along said guide iframe, a flexible member connected to saicl elevating member for moving it along said guide frame, a sheave at the upper enrl of said guide frame and around which said flexible member is reeved, a support movably mounted on one ol said frames, a sheave enrried by said support and around which said flexble'memher is reeved, means lor winding' up nml paying out said flexible member, the pull on said flexible member operating through the sheave on said support to move the latter in one direction, and a spring normally acting on said support to move it in the opposite direction.; anti for the present claim numbers reading 'from l to 19 consecutively read 2 to 2li consecutively; and that the said Lettere Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Uffice.

Signed anrl sealed this 5th day of November', A. lll. i935.

, Leslie Frazer (Seal) Acting Commissioner of Patents. 

